About HarborConvert
File conversion that keeps your files where they belong — on your device.
Every day, millions of people upload sensitive documents — tax returns, medical records, legal contracts, financial data — to online file converters. Those files travel to unknown servers, pass through unknown processes, and are retained for unknown lengths of time.
We built HarborConvert because there's a better way. Modern browsers are powerful enough to run real conversion software using WebAssembly and JavaScript. Your PDF can be merged, your Excel exported to JSON, your image resized — all without a single byte of file data leaving your device.
How it works
When you open a converter, we load the necessary software directly into your browser. For PDF operations, that's pdf-lib and PDF.js. For spreadsheets, it's SheetJS. For images, it's the browser's own Canvas API. The conversion happens in your browser's memory. The result is downloaded directly to your device. Our servers never see your file.
What we do store
If you create a Pro or Business account, we store metadata about your conversions — the file name, file size, format, and timestamp. Never the file itself. This powers your conversion history so you can see what you've converted. The file data never touches our systems.
Our pricing model
The free tier is genuinely free, forever. We show ads to free users to keep the lights on. Pro and Business plans remove ads and add batch processing, larger file limits, and team features. No sneaky limits, no file-count caps designed to frustrate you into upgrading — just a fair model where power users pay for power features.